| 大型汽轮发电机定子绕组接地故障零序电压的数字仿真 |
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| 引用本文： | 尹项根,陈德树.大型汽轮发电机定子绕组接地故障零序电压的数字仿真[J].华中科技大学学报(自然科学版),1990(Z1). |
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| 作者姓名： | 尹项根 陈德树 |
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| 作者单位： | 华中理工大学电力工程系
(尹项根)，华中理工大学电力工程系(陈德树) |
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| 摘 要： | 本文依据大型汽轮发电机定子绕组的结构,建立了新的接地故障时零序电压的数字仿真模型。某些难以处理的因素会使机端对中性点三次谐波电压之比值在不同正常运行工况下发生变化,对此本文建议用实测值来修正仿真结果,并给出一种简便的修正方法。该仿真可被用来分析各种定子接地故障保护方案的特性。
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| 关 键 词： | 发电机保护 定子接地故障 零序电压 三次谐波电压 数字仿真 |
Digital Simulation for Zero-Sequence Voltage of Large Turbo-generator during Stator Ground Fault |
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| Yin Xianggeng,Chen Deshu.Digital Simulation for Zero-Sequence Voltage of Large Turbo-generator during Stator Ground Fault[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1990(Z1). |
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| Authors: | Yin Xianggeng Chen Deshu |
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| Affiliation: | Yin Xianggeng Chen Deshu |
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| Abstract: | New simulation models for the zero-sequence voltage of large turbogenerator during a stator ground fault are presented. For the realization of digital simulation, equivalent circuits based on the actual condition of stator coil-groups have been built according to the distribution of zero-sequence voltage. In fact, the ratio between the third harmonic voltage at the neutral and terminals does not remain constant even when the generator is in normal operation because some complicated factors in the models are very difficult to define. A correction for the models with some actual measurements on the generator is proposed. |
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| Keywords: | Generator protection Stator ground fault Zero-sequence voltage Third harmonic voltage Digital simulation |
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